Digits and iMessage

I asked about this when Digits was in beta, and am unsure if I should resurrect that thread to ask this, please let me know if that is the case.

I've seen multiple threads, but they seem to conflict. TMobile's forums say I can't have iMessage on with Digits at all. But a thread I saw on Reddit has one person saying "iMessages will get stuck" and another saying "They're stuck in iMessage".

I just want calling to work through Digits, don't really care about texting through Digits if it breaks iMessage.

According to our sister site, Android Central, “Digits is a cross-platform play, sure, but it is tailor-made for Android. Not only does iOS have its own cross-device communications protocol in iMessage, which may mess with Digits' ability to route texts, but Apple doesn't allow for any system-level alterations, rendering one of Digits' primary use cases moot.”